Fabric particularly applicable to the manufacture of ring packing for glands



A. R. TRIST.

FABRIC PARTICULARLY AP PHCABLE TO THE MANUFACTURE OF RING PACKING FORGLANDS. APPLICATION FILED FEB. 16. 1922.

1,414,001. P e ed p -25,1922.

ARTHUR R mvEm'oR; By W Attorney.

ARTHUR RONALD TRIST, OF LONDON, ENGLAND.

FABRIC PARTICULARLY APPLICABLE TO THE MANUFACTURE OF RING PACKING FORGLANDS.

Specification of Letters Patent.

Patented A1) 1'. 25, 1922.

Application filed February 16, 1922. Serial No. 536,903.

To all whom if mug concern:

Be it known that l. An'rni'n Roxana Tmsr. a subject of the King of GreatBritain and Ireland. residing at Dinneford House. 12 Clipstone Street.London, England formerly of Coronation House. 4 Lloyds Avenue, London.England. have invented new and usefulImprovements in and Relatin toFabrics Particularly Applicable to the llanufacture of King lackings forGlands, of which the following is a specification.

This invention relates to improvements in fabrics and has particularreference to fabrics employed in the production of articles involvingsuperimposed layers of sheet material such as packing for glands. hosepiping, pneumatic tyres and beltin and has for its object the productionof an improved sheet material and a method of manufacture whereby suchmaterialmay be produced in a very expeditious and economical manner saidmaterial being of a character particularly well adapted to resisttensional stress in a direction other than that of the warp and weft.

In building up articles of ring form from superimposed layers of fabricit is well known that to obtain the desired formation the fabric nmst becut on the bias and that as a result the article produced may be easilydeformed.

The invention consists in the arrangement of a plurality of auxiliarystrands upon a fabric comprising interwoven warp and weft threads saidauxiliary strands being attached to the fabric by means of a suit- 7able agglutinant said auxiliary strands being Sodisposed in the finishedarticle that they are mrticularly well adapted to resist tensional.stress and means whereby such strands may be placed in position.

'Referring to the drawings. which form part of this specification,

Fig. 1 illustrates a piece of woven fabric having auxiliary threadssubstantially disposed at 45" to warp and weft.

Fig. 2 diagrammatically illustrates one method by which the improvedsheet material can be expeditiously manufactured.

Referring to Fig. l of the drawings it will be seen that the auxiliarystrands a are. disposed in angular relation to the. warp I) and weft 1:and when thefabric comprised by that warp and weft is impregnated withan agglutinant the strands a may be similarly impregnated means beingprovided whereby the auxiliary strands a are pressed into closeassociation with the warp I) and weft c to produce a compound sheetmaterial having smooth surfaces.

The particular angular relation of theauxiliary strands a to the warp band weft 1: depends upon the way in which the/bias cut compound sheetmaterial is employed, said strands (I- being so dispositioned that inthe finished article theywill assist the warp and weft in resistingtensional stress.

Assuming that the. sheet material re: quired is to include. wovenfabriccut on the bias so as to have/the warp l1 and weft 0 disposed at 45 tothe cut the auxiliary strands a are disposed substantially at 45 to thewarp I) and weft a. I e

To form such a compound sheet material the method diagrammaticallyillustrated in Fig. 2 may be employed. The impregnated fabric (l isfirst wound in uncut condition from a roll 6 on to a. mandrel f with ananlar pitch of 45 the edges of the impregnated fabric (1 being arrangedto abut. The auxiliary impregnated strand (1. is wound from the reel gon to the impregnated fabric (1 on the mandrel f at such a pitch as willproduce the required spacing. pressure. and other treatment by means ofrollers (not shown) being employed to embed the auxilia-ry strand a inthe fabric (1 in close asso' ciation with the warp b and weft c thewhole being included in the impregnating material so as to produce acompound impregnated sheet material having smooth surfaces.

The, cylinder of compound sheet material Is now cut along the junctionline. at about the point 71. so as to'prmluce. a strip of compoundsheet. matcrial similar in dimension and shape to the impregnated fabricoriginally employed.

By this means it will be seen that the auxiliary strands a are in spacedparallel relation to one another and substantially angularly disposed at45 to the warp I: and weft c.

\Vhcn this compound sheet material is cut on the bias at 5 as at '1' andZ' it will be obvious that the warp I; and weft c of the woven fabricwill be at 45 to the cut edge. and the auxiliary strands a will be at 90to such edge so that when the compound fabric is made up into aformation involving superposed layers the auxiliary strands a will besubstantially in planes parallel to the axis of the formation and thusassist the warp and weft in resisting tensional stresses in the articlesproduced.

Obviously the auxiliary strand a may be in the form of a thread. yarn orribbon withoutdeparting from the nature of this invention and if sodesired a plurality of such threads, yarns or ribbons may besimultaneously applied.

I claim:

1. An improved sheet material comprising warp threads and weft threadsinterwoven to form a fabric and auxiliary threads overlaid on the warpthreads and weft threads in angular relation to both warp threads andweft threads and means for maintaining the auxiliary threads inpredetermined position.

2. In an improved sheet material as claimed in claim 1 the use of anagglutinant with which the warp threads, weft threads and auxiliarythreads are impregnated, said agglutinant enabling close and intimateassociation between the warp, weftand auxiliary threads being obtainedby the application of pressure.

3. An improved compound sheet material in which an auxiliary thread isdisposed at 45 to and laid over the warp and weft threads and arrangedat right angles to the cut edges of the material, substantially as andfor the purposes described.

In testimony whereof i have signed my name to this specification in thepresence of the subscribing witnesses.

ARTHUR RONALD TRIST.

Witnesses:

E. L. SAMSON, EUGENE Louis SAMSON, WILLIAM BLACK.

